Rosh Hashanah- 

Original content from History.com 

Shanah Tovah!- 'L'shanah tovah tikatev v'taihatem', which means 'may you be inscribed and sealed for a good year. '

Rosh Hashanah, the Jewish New Year, is one of Judaism’s holiest days. Meaning “head of the year” or “first of the year,” the festival begins on the first day of Tishrei, the seventh month of the Hebrew calendar, which falls during September or October. Rosh Hashanah commemorates the creation of the world and marks the beginning of the Days of Awe, a 10-day period of introspection and repentance that culminates in the Yom Kippur holiday, also known as the Day of Atonement. Rosh Hashanah and Yom Kippur are the two “High Holy Days” in the Jewish religion. 

More from History.com